4640065687 has 4 divisors (see below), whose sum is σ = 4663382800. Its totient is φ = 4616748576.

The previous prime is 4640065681. The next prime is 4640065693. The reversal of 4640065687 is 7865600464.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4640065681) and next prime (4640065693).

It is a cyclic number.

It is not a de Polignac number, because 4640065687 - 2⁷ = 4640065559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640065681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11658258 + ... + 11658655.

It is an arithmetic number, because the mean of its divisors is an integer number (1165845700).

Almost surely, 2^4640065687 is an apocalyptic number.

4640065687 is a deficient number, since it is larger than the sum of its proper divisors (23317113).

4640065687 is a wasteful number, since it uses less digits than its factorization.

4640065687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23317112.

The product of its (nonzero) digits is 967680, while the sum is 46.

The square root of 4640065687 is about 68118.0276211812. The cubic root of 4640065687 is about 1667.9180537342.

The spelling of 4640065687 in words is "four billion, six hundred forty million, sixty-five thousand, six hundred eighty-seven".